Heating system



Oct. 3, 195 0 GONZALEZ 2,524,288

HEATING SYSTEM Filed Dec. 4, 1948 INVENTOR.

- LUIS DIAZ GONZALEZ BY A TT ORNE Y i atenteci dot.

UNITED STATE HEATING SYSTEM Luis Diaz Gonzalez Seville, spam Application December 4, 1943, Serial No. eass In Spain April 'l, 1948 The present invention relates to heating systems and, more particularly, to systems of the type wherein a heat-carrying fluid, for example air, is circulated through the space or body to be heated after having previously, been brought to an elevated temperature in a furnace or heating unit.

An object of the present invention is to provide a system of the character described in which means are provided for initially heating the heatcarrying medium, such as air, to very high temperatures, e. g. of the order of 500 C.

Fundamentally, an indirect heating system of the type described may operate in one of two manners: Either the heated fluid is circulated through a conduit system to give oif its heat to its surroundings by contact and/ or radiation, or the fluid (preferably air) is directly introduced into the atmosphere of the room which is to be heated. In the latter case, care must be taken that the fluid (air) be free from contamination by the flue gases of the furnace in which it had been heated, no such precautions being necessary in the former case.

It is another object of the invention to provide, in a heating system, means for utilizing a heated fluid (preferably air) in either of the two manners described.

It is a further object of the invention to provide, in a system wherein a heated fluid is circulated through conduits, means for optionally admixing the hot flue gases with said fluid, whereby the efficiency of the system and the amount of heat obtainable therefrom will be increased.

Still another object of the invention is to provide a heating unit having means for enabling greatest possible heating contact between a source of heat and a fluid to be heated to be obtained.

The above and further objects of the invention will become apparent from the. following description of a preferred embodiment, reference being had to the accompanying drawing in which:

Fig. 1 is a front elevational view, partly in sec- 'tion, of a heating unit according to the inventicn; and

Fig. 2 is a side elevation of the unit shown in Fig. 1, part of a side wall being broken away to expose the underlying structure of the heating unit.

Referring to the drawing in detail, the heating unit comprises a furnace having a front wall I, a rear wall 2, side walls 3 and 4, a top wall 5 and 1 Claim. (01. 263-19 a bottom wall 6, these Walls constituting a her; i

metically sealed housing which encloses an outer chamber or heating space If; and an inner chamber or firebox 1. The firebox or combustion chamber, 1 is divided into an upper and a lower compartment by a .slidable grate 8, the upper.

compartment being traversed by a set of tubes 9, arranged in layers or tiers, interconnecting the left-hand and the right-hand side of the outer chamber I6 as viewed in Fig. 1. These tubes may be made of metal or any other suitable material capable of being brought to red heat, and by their shape present a large heating surface for the utilization of the heat produced in the interior of the furnace. Accordingly, the volume of heat which can be transferred to a fluid passing through these tubes, in a manner subsequently to be described, will be very large.

A flue pipe or chimney is provided at or near the top of the furnace body, to allow for the escape of combustion gases and smoke when the same are not utilized in the heating system itself, as presently described. For this purpose the chimney ll] communicates with the combustion chamber 1 by means of two curved conduits or tubes l'l whose ends l8 open into the chamber 1 below the grate 8. The tubes ll pass through the outer chamber l6 where the gases passing through these tubes further contribute to the heating of the heat-carrying fluid.

The chimney pipe I!) further communicates with a conduit or tube 12 which leads to a collector l3 from which heated air, entering through an opening or port is in the wall 3, may pass into a blower chamber l4 housing a blower (not shown) which is driven from a motor 15 provided with a flywheel [4a.

The flue pipe ID is provided with a valve or damper ll whereby the passage of the flue gases through this pipe may be regulated or entirely shut off. Similarly, the tube 12 is provided with a valve or shutter l2a permitting this tube to be selectively blocked with respect to any gases coming from the flue pipe H3.

The front wall I of the furnace is further provided with a pair of tightly closing hatches 20, affording admittance to the chamber it for purposes of cleaning, adjustment or repair, and with a door 2| leading to the combustion chamber I.

A thermometer 22 is provided on the top par. of the collector chamber 13 to allow temperature measurements to be taken at a location where the temperature of the heat-carrying fluid will be the highest.

In operation, it will be understood that pure, uncontaminated air may be fed into the collector l3 by shutting off the connecting tube [2 between this chamber and the chimney, at the same time opening the damper H to provide an escape path for the flue gases. On the other hand, it is equally feasible to admix the hot combustion gases with the air entering through the port 19, for which purpose it is merely necessary to open the shutter [2a and to throttle the passage through the flue pipe by means of the valve II.

I have found that, with a heating unit of the type just described, air temperatures as high as 500 C. could be obtained.

While the invention has been described with reference to a single, preferred embodiment, it is to be understood that the same is susceptible to numerous modifications and adaptations without departing from the spirit and scope of the invention as defined in the objects and in the appended claim.

I claim:

A furnace comprising a combustion chamber, a heating space at least partially surrounding said chamber, an inlet port connecting said space with the atmosphere, distributor means communicating with said space, forced draft means in said distributor means, a line pipe communicating with said chamber, and conduit means connecting said flue pipe with said distributor means, valve means in said flue pipe for throttling the escape of gases therethrough and other valve means in said conduit means disconnecting said distributor means from said flue pipe, a grate dividing said chamber into two compartments, said tubes being disposed in the compartment above the grate, at least one tube connecting said flue pipe with said chamber, said tube extending within said space as an additional heating surface.

LUIS DIAZ GONZALEZ.

REFERENCES CITED The following references are of record in the:

file of this patent:

UNITED STATES PATENTS Number Name Date 664,751 Hollingsworth Dec. 25, 1900 1,284,053 Briggs Nov. 5, 1918 1,752,483 Harrison Apr. 1, 1930 

